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An effective medium method is developed for the slightly compressible elastic media permeated with air-filled bubbles, according to the nonlinear oscillation of the bubble, which happens when compressional wave travels through the porous media.
      
We examine the problem of finding the generatrix shape of a body of revolution which travels at supersonic speed and has minimum wave drag.
      
The amplitude of both fast and slow waves increases when the wave travels upward and diminishes when the wave travels downward.
      
The nonlinearity of the wave (i.e., the parameter characterizing the deviation of the wave from sinusoidal form) diminishes in the case of fast magnetoacoustic waves when the wave travels upward and increases when the wave travels downward.
      
It is noted that the ignition begins at a point and there is subsequent transition of the complete surface of the catalyst to the high-temperature region by a combustion wave that travels along the catalyst.
      
The reflection of a long wave from a vertical wall is studied on the assumption that the wave travels in a channel or river of parabolic cross section.
      
It is shown for both a block and a single nozzle the shock wave travels with almost the same velocity, whereas the jet front formed at the exit from a single nozzle moves much more slowly than the jet front formed beyond a nozzle block.
      
It is known from experiments [1, 2] that after depressurization a rarefaction wave travels into the channel with the speed of sound in the pure liquid.
      
The limitations of the doublet model include both the simplified determination of the velocity field and the obligatory formation of a trap when water travels through a doublet.
      
A mathematical model of the scattering of the detonation products of a condensed explosive with inert metal particles when the wave travels along the axis of a cylindrical charge is proposed and numerical calculations are carried out.
      
In the particular case when the profile of the buoyancy frequency is symmetric and its axis coincides with the path along which the cylinder's axis travels, the vortex systems on both sides of the wake are nearly identical.
      
On the basis of a model kinetic equation, the rarefied gas flow between coaxial circular cylinders, of which the outer one is at rest while the inner one travels along its symmetry axis at a constant velocity, is studied.
      
The numerical solution of the problem of flow past a plate whose surface travels in the opposite direction to the stream is obtained under the assumption that the surface velocity is higher than the free-stream velocity.
      
It is established that the pulse travels in the direction of the drift of long-lived carriers, electrons.
      
As a result, a wave travels over the Earth's surface, whose amplitude, in the case of an oblique impact, depends on the direction of the wave propagation.
      
In a homogeneous medium, a wave first travels to the array focus, is focused, and then travels away from the focus, whereas, in an inhomogeneous medium, the wave does not travel at all.
      
The results show that the principal dynamo wave, which travels in the northern hemisphere from middle latitudes toward the equator, penetrates slightly into the southern hemisphere.
      
Stochastic Faraday rotation due to isotropic fluctuations, B', efficiently decreases the amplitude of the polarization of each individual beam as it travels through the turbulent atmosphere.
      
It is shown that when a relativistic electron travels in a direction close to the direction of the wave vector of a focused laser beam, these components can greatly exceed the gradient force.
      
Resonance rf heating of gadolinium plasma ions is calculated in the configuration when an electric field travels along a permanent magnetic field and simultaneously rotates in the direction normal to the latter.
      
 

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